/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file source/blender/freestyle/intern/python/Iterator/BPy_Interface0DIterator.cpp
 *  \ingroup freestyle
 */

#include "BPy_Interface0DIterator.h"

#include "../BPy_Convert.h"
#include "../BPy_Interface1D.h"

#ifdef __cplusplus
extern "C" {
#endif

///////////////////////////////////////////////////////////////////////////////////////////

//------------------------INSTANCE METHODS ----------------------------------

PyDoc_STRVAR(Interface0DIterator_doc,
"Class hierarchy: :class:`Iterator` > :class:`Interface0DIterator`\n"
"\n"
"Class defining an iterator over Interface0D elements.  An instance of\n"
"this iterator is always obtained from a 1D element.\n"
"\n"
".. method:: __init__(brother)\n"
"\n"
"   Copy constructor.\n"
"\n"
"   :arg brother: An Interface0DIterator object.\n"
"   :type brother: :class:`Interface0DIterator`\n"
"\n"
".. method:: __init__(it)\n"
"\n"
"   Construct a nested Interface0DIterator that can be the argument of\n"
"   a Function0D.\n"
"\n"
"   :arg it: An iterator object to be nested.\n"
"   :type it: :class:`SVertexIterator`, :class:`CurvePointIterator`, or\n"
"      :class:`StrokeVertexIterator`");

static int convert_nested_it(PyObject *obj, void *v)
{
	if (!obj || !BPy_Iterator_Check(obj))
		return 0;
	Interface0DIteratorNested *nested_it = dynamic_cast<Interface0DIteratorNested *>(((BPy_Iterator *)obj)->it);
	if (!nested_it)
		return 0;
	*((Interface0DIteratorNested **)v) = nested_it;
	return 1;
}

static int Interface0DIterator_init(BPy_Interface0DIterator *self, PyObject *args, PyObject *kwds)
{
	static const char *kwlist_1[] = {"it", NULL};
	static const char *kwlist_2[] = {"inter", NULL};
	static const char *kwlist_3[] = {"brother", NULL};
	Interface0DIteratorNested *nested_it;
	PyObject *brother, *inter;

	if (PyArg_ParseTupleAndKeywords(args, kwds, "O&", (char **)kwlist_1, convert_nested_it, &nested_it)) {
		self->if0D_it = new Interface0DIterator(nested_it->copy());
		self->at_start = true;
		self->reversed = false;
	}
	else if (PyErr_Clear(),
	         PyArg_ParseTupleAndKeywords(args, kwds, "O!", (char **)kwlist_2, &Interface1D_Type, &inter))
	{
		self->if0D_it = new Interface0DIterator(((BPy_Interface1D *)inter)->if1D->verticesBegin());
		self->at_start = true;
		self->reversed = false;
	}
	else if (PyErr_Clear(),
	         PyArg_ParseTupleAndKeywords(args, kwds, "O!", (char **)kwlist_3, &Interface0DIterator_Type, &brother))
	{
		self->if0D_it = new Interface0DIterator(*(((BPy_Interface0DIterator *)brother)->if0D_it));
		self->at_start = ((BPy_Interface0DIterator *)brother)->at_start;
		self->reversed = ((BPy_Interface0DIterator *)brother)->reversed;
	}
	else {
		PyErr_SetString(PyExc_TypeError, "invalid argument(s)");
		return -1;
	}
	self->py_it.it = self->if0D_it;
	return 0;
}

static PyObject *Interface0DIterator_iter(BPy_Interface0DIterator *self)
{
	Py_INCREF(self);
	self->at_start = true;
	return (PyObject *) self;
}

static PyObject *Interface0DIterator_iternext(BPy_Interface0DIterator *self)
{
	if (self->reversed) {
		if (self->if0D_it->isBegin()) {
			PyErr_SetNone(PyExc_StopIteration);
			return NULL;
		}
		self->if0D_it->decrement();
	}
	else {
		if (self->if0D_it->atLast() || self->if0D_it->isEnd()) {
			PyErr_SetNone(PyExc_StopIteration);
			return NULL;
		}
		if (self->at_start)
			self->at_start = false;
		else
			self->if0D_it->increment();
	}
	Interface0D *if0D = self->if0D_it->operator->();
	return Any_BPy_Interface0D_from_Interface0D(*if0D);
}

/*----------------------Interface0DIterator get/setters ----------------------------*/

PyDoc_STRVAR(Interface0DIterator_object_doc,
"The 0D object currently pointed to by this iterator.  Note that the object\n"
"may be an instance of an Interface0D subclass. For example if the iterator\n"
"has been created from :method:`Stroke.vertices_begin`, the .object property\n"
"refers to a :class:`StrokeVertex` object.\n"
"\n"
":type: :class:`Interface0D` or one of its subclasses.");

static PyObject *Interface0DIterator_object_get(BPy_Interface0DIterator *self, void *UNUSED(closure))
{
	if (self->if0D_it->isEnd()) {
		PyErr_SetString(PyExc_RuntimeError, "iteration has stopped");
		return NULL;
	}
	return Any_BPy_Interface0D_from_Interface0D(self->if0D_it->operator*());
}

PyDoc_STRVAR(Interface0DIterator_t_doc,
"The curvilinear abscissa of the current point.\n"
"\n"
":type: float");

static PyObject *Interface0DIterator_t_get(BPy_Interface0DIterator *self, void *UNUSED(closure))
{
	return PyFloat_FromDouble(self->if0D_it->t());
}

PyDoc_STRVAR(Interface0DIterator_u_doc,
"The point parameter at the current point in the 1D element (0 <= u <= 1).\n"
"\n"
":type: float");

static PyObject *Interface0DIterator_u_get(BPy_Interface0DIterator *self, void *UNUSED(closure))
{
	return PyFloat_FromDouble(self->if0D_it->u());
}

PyDoc_STRVAR(Interface0DIterator_at_last_doc,
"True if the interator points to the last valid element.\n"
"For its counterpart (pointing to the first valid element), use it.is_begin.\n"
"\n"
":type: bool");

static PyObject *Interface0DIterator_at_last_get(BPy_Interface0DIterator *self, void *UNUSED(closure))
{
	return PyBool_from_bool(self->if0D_it->atLast());
}

static PyGetSetDef BPy_Interface0DIterator_getseters[] = {
	{(char *)"object", (getter)Interface0DIterator_object_get, (setter)NULL,
	                   (char *)Interface0DIterator_object_doc, NULL},
	{(char *)"t", (getter)Interface0DIterator_t_get, (setter)NULL, (char *)Interface0DIterator_t_doc, NULL},
	{(char *)"u", (getter)Interface0DIterator_u_get, (setter)NULL, (char *)Interface0DIterator_u_doc, NULL},
	{(char *)"at_last", (getter)Interface0DIterator_at_last_get, (setter)NULL,
	                    (char *)Interface0DIterator_at_last_doc, NULL},
	{NULL, NULL, NULL, NULL, NULL}  /* Sentinel */
};

/*-----------------------BPy_Interface0DIterator type definition ------------------------------*/

PyTypeObject Interface0DIterator_Type = {
	PyVarObject_HEAD_INIT(NULL, 0)
	"Interface0DIterator",          /* tp_name */
	sizeof(BPy_Interface0DIterator), /* tp_basicsize */
	0,                              /* tp_itemsize */
	0,                              /* tp_dealloc */
	0,                              /* tp_print */
	0,                              /* tp_getattr */
	0,                              /* tp_setattr */
	0,                              /* tp_reserved */
	0,                              /* tp_repr */
	0,                              /* tp_as_number */
	0,                              /* tp_as_sequence */
	0,                              /* tp_as_mapping */
	0,                              /* tp_hash  */
	0,                              /* tp_call */
	0,                              /* tp_str */
	0,                              /* tp_getattro */
	0,                              /* tp_setattro */
	0,                              /* tp_as_buffer */
	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
	Interface0DIterator_doc,        /* tp_doc */
	0,                              /* tp_traverse */
	0,                              /* tp_clear */
	0,                              /* tp_richcompare */
	0,                              /* tp_weaklistoffset */
	(getiterfunc)Interface0DIterator_iter, /* tp_iter */
	(iternextfunc)Interface0DIterator_iternext, /* tp_iternext */
	0,                              /* tp_methods */
	0,                              /* tp_members */
	BPy_Interface0DIterator_getseters, /* tp_getset */
	&Iterator_Type,                 /* tp_base */
	0,                              /* tp_dict */
	0,                              /* tp_descr_get */
	0,                              /* tp_descr_set */
	0,                              /* tp_dictoffset */
	(initproc)Interface0DIterator_init, /* tp_init */
	0,                              /* tp_alloc */
	0,                              /* tp_new */
};

///////////////////////////////////////////////////////////////////////////////////////////

#ifdef __cplusplus
}
#endif
